LIBS TASK OIGSCI 11 0620 23 2016 - Dynamic Papersdynamicpapers.com/wp-content/uploads/2015/09/0620_w16_qp_23.pdf · Sodium chloride is a solid at room temperature. ... ammonium nitrate

The syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate.

This document consists of 16 printed pages.

IB16 11_0620_23/6RP © UCLES 2016 [Turn over

*0838065749*

Cambridge International Examinations Cambridge International General Certificate of Secondary Education

CHEMISTRY 0620/23

Paper 2 Multiple Choice (Extended) October/November 2016

45 minutes Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended)

READ THESE INSTRUCTIONS FIRST

Write in soft pencil.

Do not use staples, paper clips, glue or correction fluid.

Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.

DO NOT WRITE IN ANY BARCODES.

There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D.

Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet.

Read the instructions on the Answer Sheet very carefully.

Each correct answer will score one mark. A mark will not be deducted for a wrong answer.

Any rough working should be done in this booklet.

A copy of the Periodic Table is printed on page 16.

Electronic calculators may be used.

www.dynamicpapers.com

2

© UCLES 2016 0620/23/O/N/16

1 ‘Particles moving very slowly from an area of higher concentration to an area of lower concentration.’

Which process is being described?

A a liquid being frozen

B a solid melting

C a substance diffusing through a liquid

D a substance diffusing through the air 2 A student mixes 25 cm3 samples of dilute hydrochloric acid with different volumes of aqueous

sodium hydroxide.

In each case, the student measures the change in temperature to test if the reaction is exothermic.

Which piece of apparatus is not needed?

burette clock pipette thermometer

A B C D


3

© UCLES 2016 0620/23/O/N/16 [Turn over

3 A solid X is purified in five steps.

The first four steps of the purification are shown in the diagram.

step 1 step 2 step 3 step 4

heat

solid Xmixture Y

In step 5, how is a pure sample of solid X obtained from mixture Y?

A dissolving

B distillation

C evaporating

D filtering 4 An atom has three electron shells. There are three electrons in the outer shell.

How many protons and how many neutrons are in this atom?

protons neutrons

A 13 14

B 13 27

C 14 13

D 21 24

5 Ethanol is a liquid at room temperature and boils at 78 °C.

Sodium chloride is a solid at room temperature.

Which statement about the bonding in ethanol and sodium chloride is not correct?

A Each ethanol molecule is held together by weak covalent bonds.

B The ethanol molecules are held together by weak attractive forces.

C The sodium ions and chloride ions are held together by strong attractive forces.

D The sodium ions and chloride ions are held together in a giant lattice.


4

© UCLES 2016 0620/23/O/N/16

6 The molecules N2, C2H4, CO2 and CH3OH all have covalent bonds.

These bonds consist of shared pairs of electrons.

Which row gives the total number of shared pairs of electrons in the molecules shown?

molecule total number of shared

pairs of electrons

A N2 2

B C2H4 6

C CO2 2

D CH3OH 4

7 Metals are malleable.

Which statement explains why metals are malleable?

A Metallic bonding is very strong.

B Metals are good conductors of electricity.

C Positive metal ions are arranged in a regular lattice structure.

D The layers of positive metal ions can slide over each other. 8 The equation shows the complete combustion of propane.

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l)

Which statement is correct?

A 10 cm3 of propane cannot burn if less than 50 cm3 of oxygen is present.

B 10 cm3 of propane would produce 40 cm3 of liquid water.

C 100 cm3 of oxygen would be sufficient to react completely with 20 cm3 of propane.

D This reaction would result in an increase in the volume of gas. 9 Sodium hydroxide reacts with sulfuric acid.

The equation for the reaction is shown.

2NaOH + H2SO4 → Na2SO4 + 2H2O

Which volume of 0.4 mol / dm3 sodium hydroxide reacts with 50.0 cm3 of 0.1 mol / dm3 sulfuric acid?

A 12.5 cm3 B 25.0 cm3 C 50.0 cm3 D 100.0 cm3


5


10 Which apparatus could be used to electroplate an iron nail with copper?

+ –

A

+ –

B

+ –

C D

aqueous copper(II) sulfate

aqueous iron(II) sulfate

+ –

key

= copper sheet

= iron nail

11 The diagram shows two different metal strips dipped into an electrolyte.

V

metal strips

electrolyte

Which pair of metals produces the highest voltage?

A copper and iron

B copper and magnesium

C copper and zinc

D magnesium and iron


6

© UCLES 2016 0620/23/O/N/16

12 10 g of ammonium nitrate are added to water at 25 °C and the mixture stirred. The

ammonium nitrate dissolves and, after one minute, the temperature of the solution is 10 °C.

Which word describes this change?

A endothermic

B exothermic

C neutralisation

D reduction 13 The energy level diagram for a reaction is shown.

energy

reactants

products

E a H

Which row is correct?

sign of ∆H overall energy change sign of Ea

A – exothermic –

B + endothermic +

C + endothermic –

D + exothermic +


7


14 An experiment X is carried out between a solid and a solution using the apparatus shown.

gas syringe

The volume of gas given off is measured at different times and the results plotted on a graph.

In a second experiment Y, the surface area of the solid is increased but all other factors remain the same.

Which graph shows the results of experiments X and Y?

A

volumeof gas

time00

Y

X

B

volumeof gas

time00

Y

X

C

volumeof gas

time00

Y

X

D

volumeof gas

time00

Y

X

15 Which change in conditions increases the energy of the particles in a reaction?

A addition of a catalyst

B increase in concentration

C increase in surface area

D increase in temperature


8

© UCLES 2016 0620/23/O/N/16

16 Chlorine can be manufactured by the following reaction. The reaction is exothermic. 4HCl (g) + O2(g) 2H2O(g) + 2Cl 2(g)

Which change increases the yield of chlorine at equilibrium?

A adding more HCl (g)

B adding more H2O(g)

C decreasing the pressure

D increasing the temperature 17 Which change represents an oxidation reaction?

A chlorine changes to chlorate(I) ions

B chlorine changes to chloride ions

C copper(II) ions change to copper

D potassium manganate(VII) ions change to potassium manganate(VI) ions

18 Germanium oxide is a white powder.

Germanium oxide reacts with concentrated hydrochloric acid.

Germanium oxide reacts with concentrated aqueous sodium hydroxide.

Germanium oxide does not dissolve when added to water.

Which type of oxide is germanium oxide?

A acidic

B amphoteric

C basic

D neutral 19 Hydrogen chloride gas reacts with water to produce an acidic solution. The equation for the

reaction is shown.

HCl + H2O → Cl – + H3O

+

Which statement describes what happens during the reaction?

A The chloride ion is formed by accepting an electron from the water.

B The hydrogen chloride loses an electron to form the chloride ion.

C The water accepts a proton from the hydrogen chloride.

D The water donates a proton to the hydrogen chloride.


9


20 The apparatus shown is used to prepare aqueous copper(II) sulfate.

Y

stirrer

solid X

aqueouscopper(II) sulfate

excess of solid X

filter paper

heat

What are X and Y?

X Y

A copper aqueous iron(II) sulfate

B copper(II) chloride sulfuric acid

C copper(II) oxide sulfuric acid

D sulfur aqueous copper(II) chloride

21 Information about some silver compounds is shown in the table.

compound formula solubility in water

silver carbonate Ag2CO3 insoluble

silver chloride AgCl insoluble

silver nitrate AgNO3 soluble

silver oxide Ag2O insoluble

Which equation shows a reaction which cannot be used to make a silver salt?

A AgNO3(aq) + HCl (aq) → AgCl (s) + HNO3(aq)

B Ag2O(s) + 2HNO3(aq) → 2AgNO3(aq) + H2O(l)

C Ag2CO3(s) + 2HNO3(aq) → 2AgNO3(aq) + H2O(l) + CO2(g)

D 2Ag(s) + 2HCl (aq) → 2AgCl (s) + H2(g)


10

© UCLES 2016 0620/23/O/N/16

22 What is not a property of Group I metals?

A They are soft and can be cut with a knife.

B They react when exposed to oxygen in the air.

C They produce an acidic solution when they react with water.

D They react rapidly with water producing hydrogen gas. 23 Compound T is added to dilute hydrochloric acid and warmed gently.

The mixture gives off a gas which turns acidified aqueous potassium manganate(VII) from purple

to colourless.

A flame test on compound T gives a lilac flame.

What is compound T?

A sodium sulfate

B sodium sulfite

C potassium sulfate

D potassium sulfite 24 Part of the Periodic Table is shown.

WZ

X Y

Which row correctly describes the properties of elements W, X, Y and Z?

has variable

oxidation states reacts with cold water

very unreactive

has four outer shell electrons

A W Y Z X

B X W Y Z

C Z W Y X

D Z Y X W


11


25 Basic oxides and oxygen are used to convert iron into steel.

Which statement is not correct?

A Carbon is converted into carbon dioxide.

B Silicon is converted into silicon(IV) oxide.

C The basic oxides react with acidic impurities to form slag.

D The oxygen reacts with the iron to produce hematite. 26 The results of two experiments are given.

1 Cobalt displaces manganese from an aqueous solution of a manganese salt.

2 Manganese displaces silver from an aqueous solution of a silver salt.

Three more experiments are carried out.

3 Cobalt is added to an aqueous solution of a silver salt.

4 Manganese is added to an aqueous solution of a cobalt salt.

5 Silver is added to an aqueous solution of a cobalt salt.

In which experiments does a reaction take place?

A 3 only B 3 and 4 C 4 and 5 D 5 only 27 Cryolite, Na3Al F6, is added to aluminium oxide in the electrolytic extraction of aluminium.

What is the reason for this?

A to decrease the melting point of the electrolyte

B to protect the anodes

C to produce more aluminium

D to stop the aluminium reacting with air 28 Different forms of steel contain different proportions of carbon.

Steel P contains a high proportion of carbon.

Steel Q contains a low proportion of carbon.


A P is stronger and more brittle than Q.

B P is stronger and less brittle than Q.

C P is less strong and more brittle than Q.

D P is less strong and less brittle than Q.


12

© UCLES 2016 0620/23/O/N/16

29 Air is a mixture of gases.

Which gas is present in the largest amount?

A argon

B carbon dioxide

C nitrogen

D oxygen 30 Which information about carbon dioxide and methane is correct?

carbon dioxide methane

A formed when vegetation decomposes � � key

B greenhouse gas � � � = true

C present in unpolluted air � � � = false

D produced during respiration � �

31 A metal, X, is used to make oil pipelines.

X corrodes in air and water.

X can be protected from corrosion by attaching blocks of element Y.


A This process is known as galvanising.

B Y forms positive ions more readily than X.

C Y is an unreactive metal.

D Y is an unreactive non-metal.

32 The Haber process for the manufacture of ammonia occurs at 450 °C and 250 atmospheres. The nitrogen and hydrogen are supplied in a 1:3 ratio by volume. The reaction is exothermic.

N2(g) + 3H2(g) 2NH3(g) ∆H = –92 kJ / mol

Which change causes an increase in the yield of ammonia?

A decreasing the concentration of nitrogen

B decreasing the pressure

C decreasing the temperature

D using equal amounts of the two reactants


13


33 The following scheme shows four stages in the conversion of sulfur to sulfuric acid.

In which stage is a catalyst used?

oleum

air air

water

sulfur sulfurdioxide

sulfurtrioxide

concentratedsulfuricacid

concentratedsulfuric acid

stage B

stage D

stage C

stage A

34 Slaked lime is used to neutralise an acidic soil.

How does the pH of the soil change?

from to

A 6 7

B 7 8

C 8 7

D 8 6

35 Which list shows the fractions obtained from distilling petroleum, in order of increasing boiling

point?

A bitumen → diesel oil → fuel oil → lubricating oil

B diesel oil → gasoline → naphtha → kerosene

C gasoline → naphtha → kerosene → diesel oil

D kerosene → lubricating oil → naphtha → refinery gas


14

© UCLES 2016 0620/23/O/N/16

36 Butane reacts as shown.

butane butene + hydrogencatalyst and heat

What is this type of reaction?

A combustion

B cracking

C polymerisation

D reduction 37 Substance Z has the following characteristics.

1 It burns in an excess of oxygen to form carbon dioxide and water.

2 It is oxidised by air to form a liquid smelling of vinegar.

3 It reacts with carboxylic acids to form esters.

What is substance Z?

A ethane

B ethanoic acid

C ethanol

D ethyl ethanoate 38 Ethanol is manufactured by the catalytic addition of steam to ethene and by fermentation.

Which row shows an advantage and a disadvantage of using the catalytic addition of steam to ethene compared to fermentation?

advantage disadvantage

A fast the product is impure

B fast uses non-renewable materials

C the product is pure slow

D uses renewable materials slow


15

Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cie.org.uk after the live examination series.

Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

© UCLES 2016 0620/23/O/N/16

39 The organic compound shown can be polymerised.

C

CH3

Cl

C

H

F

Which diagram represents a section of the polymer?

F F

CH3

CCC C

CH3 H Cl

Cl H

A

Cl F

Cl

CCC C

H F CH3

CH3 H

B

H H

F

CCC C

Cl F Cl

CH3 CH3

C

F CH3

H

CCC C

Cl H Cl

CH3 F

D

40 The partial structure of a polymer is shown.

C

O

C C

OO

N

H

N

H

N

H

Which type of polymer is represented?

A a carbohydrate

B a polyamide

C a polyester

D an addition polymer


16

© UCLES 2016 0620/23/O/N/16

Gro

up

The

Perio

dic

Tabl

e of

Ele

men

ts

1 Hhy

drog

en1

2 He

heliu

m4

III

IIIIV

VV

IV

IIV

III

3 Lilit

hium 7

4 Be

bery

llium

9

atom

ic n

umbe

r

atom

ic s

ymbo

l

Key

nam

ere

lativ

e at

omic

mas

s

11 Na

sodi

um23

12 Mg

mag

nesi

um24

19 Kpo

tass

ium

39

20 Ca

calc

ium

40

37 Rb

rubi

dium

85

38 Sr

stro

ntiu

m88

55 Cs

caes

ium

133

56 Ba

bariu

m13

7

87 Frfra

nciu

m–

88 Ra

radi

um –

5 B boro

n11 13 Al

alum

iniu

m27 31 Ga

galli

um70 49 In indi

um11

5

81 Tlth

alliu

m20

4

6 Cca

rbon

12 14 Si

silic

on28 32 Ge

germ

aniu

m73 50 Sn tin 119

82 Pb

lead

207

22 Titit

aniu

m48 40 Zr

zirc

oniu

m91 72 Hf

hafn

ium

178

104

Rf

ruth

erfo

rdiu

m–

23 Vva

nadi

um51 41 Nb

niob

ium

93 73 Tata

ntal

um18

1

105

Db

dubn

ium

–

24 Cr

chro

miu

m52 42 Mo

mol

ybde

num

96 74 Wtu

ngst

en18

4

106

Sg

seab

orgi

um–

25 Mn

man

gane

se55 43 Tc

tech

netiu

m– 75 Re

rhen

ium

186

107

Bh

bohr

ium

–

26 Fe iron

56 44 Ru

ruth

eniu

m10

1

76 Os

osm

ium

190

108

Hs

hass

ium

–

27 Co

coba

lt59 45 Rh

rhod

ium

103

77 Iriri

dium

192

109

Mt

mei

tner

ium

–

28 Ni

nick

el59 46 Pd

palla

dium

106

78 Pt

plat

inum

195

110

Ds

darm

stad

tium

–

29 Cu

copp

er64 47 Ag

silv

er10

8

79 Au

gold

197

111

Rg

roen

tgen

ium

–

30 Zn zinc 65 48 Cd

cadm

ium

112

80 Hg

mer

cury

201

112

Cn

cope

rnic

ium

–

114 Fl

flero

vium

–

116

Lvliv

erm

oriu

m–

7 Nni

troge

n14 15 P

phos

phor

us31 33 As

arse

nic

75 51 Sb

antim

ony

122

83 Bi

bism

uth

209

8 Oox

ygen

16 16 S sulfu

r32 34 Se

sele

nium

79 52 Tete

lluriu

m12

8

84 Po

polo

nium

–

9 Fflu

orin

e19 17 Cl

chlo

rine

35.5

35 Br

brom

ine

80 53 Iio

dine

127

85 At

asta

tine

–

10 Ne

neon 20 18 Ar

argo

n40 36 Kr

kryp

ton

84 54 Xe

xeno

n13

1

86 Rn

rado

n–

21 Sc

scan

dium

45 39 Yyt

trium 89

57–7

1la

ntha

noid

s

89–1

03ac

tinoi

ds

57 Lala

ntha

num

139

89 Ac

lant

hano

ids

actin

oids

The

volu

me

of o

ne m

ole

of a

ny g

as is

24

dm3 a

t roo

m te

mpe

ratu

re a

nd p

ress

ure

(r.t.p

.)

actin

ium

–

58 Ce

ceriu

m14

0

90 Th thor

ium

232

59 Pr

pras

eody

miu

m14

1

91 Pa

prot

actin

ium

231

60 Nd

neod

ymiu

m14

4

92 Uur

aniu

m23

8

61 Pm

prom

ethi

um– 93 Np

nept

uniu

m–

62 Sm

sam

ariu

m15

0

94 Pu

plut

oniu

m–

63 Eu

euro

pium

152

95 Am

amer

iciu

m–

64 Gd

gado

liniu

m15

7

96 Cm

curiu

m–

65 Tb terb

ium

159

97 Bk

berk

eliu

m–

66 Dy

dysp

rosi

um16

3

98 Cf

calif

orni

um–

67 Ho

holm

ium

165

99 Es

eins

tein

ium

–

68 Er

erbi

um16

7

100

Fm ferm

ium

–

69 Tm thul

ium

169

101

Md

men

dele

vium

–

70 Yb

ytte

rbiu

m17

3

102

No

nobe

lium

–

71 Lu lute

tium

175

103 Lr

law

renc

ium

–


Documents

LIBS TASK OIGSCI 11 0620 23 2016 - Dynamic Papersdynamicpapers.com/wp-content/uploads/2015/09/0620_w16_qp_23.pdf · Sodium chloride is a solid at room temperature. ... ammonium nitrate